Strain-rate sensitivity and fracture mode of V-5Cr-5Ti alloy

被引：7

作者：

Cai, M. C. ^{[1
,2
]}

Zhang, J. T. ^{[1
]}

Niu, L. S. ^{[1
]}

Shi, H. J. ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Aerosp, AML, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China

来源：

SCRIPTA MATERIALIA | 2010年 / 62卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Strain-rate sensitivity; Dislocation theory; Fracture; Mechanical properties; V-5Cr-5Ti; TI-CR ALLOY; CONSTITUTIVE RELATIONS; MECHANICAL-PROPERTIES; INTERNAL-FRICTION; VANADIUM ALLOYS; IRRADIATION; TOUGHNESS; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2009.12.035

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The strain-rate sensitivity of V-5Cr-5Ti alloy was investigated in the strain-rate range 10(-4)-10(-1) s(-1) at room temperature. The rate sensitivity decreased with the increase of plastic strain, which was qualitatively explained by dislocation thermal activation theory combined with a dislocation multiplication model. A modified Johnson-Cook model was developed to characterize the strain-rate dependence. Scanning electron microscopy of the fracture surfaces revealed that the dominant mechanisms of fracture were intergranular fracture and dimple rupture. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：524 / 527

页数：4

共 25 条

[1]

Armstrong R.W., 2009, MECH PROPERTIES NANO

[2] Dislocation density-based constitutive model for the mechanical behaviour of irradiated Cu [J].

Arsenlis, A ;

Wirth, BD ;

Rhee, M .

PHILOSOPHICAL MAGAZINE, 2004, 84 (34) :3617-3635

[3] Materials challenges for ITER - Current status and future activities [J].

Barabash, V. ;

Peacock, A. ;

Fabritsiev, S. ;

Kalinin, G. ;

Zinkle, S. ;

Rowcliffe, A. ;

Rensman, J.-W. ;

Tavassoli, A. A. ;

Marmy, P. ;

Karditsas, P. J. ;

Gillemot, F. ;

Akiba, M. .

JOURNAL OF NUCLEAR MATERIALS, 2007, 367 (SPEC. ISS.) :21-32

[4]

BRAY TS, 2000, J NUCL MATER, P283

[5] Internal friction and anelastic properties of vanadium and V-Ti-Cr alloys [J].

Chernov, VM ;

Kardashev, BK ;

Krjukova, LM ;

Mamaev, LI ;

Plaksin, OA ;

Rusanov, AE ;

Solonin, MI ;

Stepanov, VA ;

Votinov, SN ;

Zavialski, LP .

JOURNAL OF NUCLEAR MATERIALS, 1998, 257 (03) :263-273

[6] The development of structural materials for fusion reactors [J].

Ehrlich, K .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1999, 357 (1752) :595-617

[7] Influence of alloying and impurity element contents on V-Ti-Cr alloy properties [J].

Evtikhin, VA ;

Lyublinski, IE ;

Vertkov, AV ;

Votinov, SN ;

Dedyurin, AI .

JOURNAL OF NUCLEAR MATERIALS, 2002, 307 :591-595

[8] A CONSTITUTIVE DESCRIPTION OF THE DEFORMATION OF COPPER BASED ON THE USE OF THE MECHANICAL THRESHOLD STRESS AS AN INTERNAL STATE VARIABLE [J].

FOLLANSBEE, PS ;

KOCKS, UF .

ACTA METALLURGICA, 1988, 36 (01) :81-93

[9] Microstructure-fracture toughness relationship of vanadium alloy/stainless steel brazed joints [J].

Gan, YX ;

Aglan, HA ;

Steward, RV ;

Chin, BA ;

Grossbeck, ML .

JOURNAL OF NUCLEAR MATERIALS, 2001, 299 (02) :157-164

[10] Microstructural examination of V-(3-6%)Cr-(3-5%)Ti irradiated in the ATR-A1 experiment [J].

Gelles, DS .

JOURNAL OF NUCLEAR MATERIALS, 2000, 283 (283-287) :344-348

← 1 2 3 →